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Heat and Cooling,Relaxing

The Cowboy Hot Tub Project

19 Aug , 2016   Video

Since it was super hot at the cabin (and no campfire ban), thought it would be a good plan to “test” the Cowboy Hot Tub Project. The goal was to place a hose/copper pipe in the campfire and run it back into the tub. The water would be pumped through the hose and come out warm on the other end. After 2 hours, the water should be a reasonable temperature.
Most of the parts were scavenged, but the stock tank was purchased used from a local farm for $200. The water tank measures 10′ long x 3′ wide by 2′ deep. It has two brace beams to keep the sides from falling out. The 300-gallon water tank was filled with a 1-1/2” PVC pipe from the water line to the cabin. More information about the parts can be found at the blog post on July 12, 2015
Filling_Cowboy_Hot_Tub Once the tank was full of fresh lake water, the next step was to heat up the water to a comfortable temperature. To help push the water, I used a 12 volt DC pond pump. It was hooked up to a deep cycle battery and worked quite good.

Pump_Battery_for_Cowboy_Hot_Tub

I had bits and pieces of  leftover, 1/2″ soft copper pipe from the old roof top water system. Using a car tire as a bending form, the pipe was bent into a coil. Built up a fire using the “log cabin” style and placed the copper pipe over the flames. It worked pretty well, but the fire needed to be hotter. I moved some the wood around and cut smaller pieces. It let it burn for a few hours and then called it quits for the day.

1st_blazing_Fire_for_Cowboy_Hot_Tub

One 1/2″ coil of copper through the campfire

2nd_Fire_for_Cowboy_Hot_Tub

The next day, I found a roll of 3/8″ pipe. Had multiple coils 4 – 5.

The next day, I looked around the shop and found a decent coil of 3/8″ soft copper. It was wound up in four coils and looked like it would do a better job. Attached the garden hose to the ends and started to work on the fire. This time, I found an old, round BBQ that had holes in the bottom. I looked for shorter logs and split them with an axe. The plan was to create a small, hot fire inside the old BBQ. Hopefully, the heat will be contained.  Once the fire was going well, the coils over the fire. I kept adding pieces to the inside and outside of the coil.
This time, I noticed the temperature was a bit hotter. The extra coils did make a difference. What was really interesting, we the wind increased and blew on the campfire, the temperature increased incredibly.

Hose_in_1st_Cowboy_Hot_Tub Side_of_Cowboy_hot_tub

At the end of the day, it was a  good test for Cowboy Hot Tube project. I know what needs to be improved and I got a chance to sit back and enjoy the project. More improvements will follow in a few weeks. Thanks for watching!

Scott_in_Cowboy_Hot_Tub

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Heat and Cooling,Other,Woodworking

The Plan to Build a Wood Fired Cedar Hot Tub

30 Jan , 2013  

Western Red Cedar four hoop hot tub handcrafted by Forest Lumber Cooperage Ltd.

Picture courtesy of Forest Lumber & Cooperage Ltd

For the past year, I been researching on how to build a wooden hot tub. If you haven’t seen one, it’s a six-foot round barrel about 4 feet high. Normally made from vertical laid Western Red Cedar planks that are fitted together. A heavy-duty banding is wrapped around the outside to keep the vertical planks from bursting. A snorkel style of wood stove is used to heat the water up. The stove sits just under the water line. Of course, I could pony up the $3500.00 a buy one. But, that’s not in the budget. The deck at the cabin comes first.

Anyway, after travelling on the internet, came across a story about another dude that wants to do the same thing…

“Hi folks, I am considering taking on the construction of an outdoor cedar hot tub. I want to build it using a joint that I have seen in use by kits I have assembled. The joint is called a canoe joint and it is used on 2×6 edges. I looked online to buy a shaper/router bit set to make this joint and have only found ones that have smaller radius than I need for my staves. Any help you can provide in a source for this bit set would be very much appreciated. Thanks, Jerry”

Round-nose-router-bit round-nose-profile So, I’m like cool. I’m not the only one. Found a responder and he/she suggested a Round Nose Router Bit by Freud. Freud makes really sweet saw blades, but I haven’t tried the bits yet. Looks like I’ll head down to the local Windsor Plywood store and pick one up.

More to come…

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